Application of glass soot catalysts on metal supports to achieve low soot oxidation temperature

作者：Su Changsheng; McGinn Paul J^*

来源：Catalysis Communications, 2014, 43: 1-5.

DOI：10.1016/j.catcom.2013.08.013

• Diesel soot combustion
• Potassium catalyst
• Glass catalyst
• Metallic particulate filter
• Sol-gel glass

K-Ca-Si-O glass was applied to metal supports for use as a catalyst for diesel soot combustion. Glasses were processed from the melt and by a sol-gel route. Catalyst activity for the oxidation of diesel exhaust soot and flame soot from an oil lamp was compared by thermogravimetric analysis (TGA). The results show that a K-based catalytic glass coating on metal substrates can reduce the temperature where half of the engine soot is oxidized (T-50) to as low as 360 degrees C under loose contact conditions, and offers catalytic stability for long term combustion cycling. Scanning electron microscopy observations show that sol-gel glass processing is effective for coating complex wire mesh shapes without pore clogging.

• 出版日期2014-1-5